>Python and Ruby come out with quite opposite results. There is absolutely no reason why those languages, on their own, should lead to wildly different error ra

>Python and Ruby come out with quite opposite results. There is absolutely no reason why those languages, on their own, should lead to wildly different error rates. Both dynamically typed, general purpose, very equivalent languages. So if this study seems intuitively like a fools-errand, that would be your smoking gun. I'm not saying this is necessarily the case, but your analysis doesn't leave room for the possibility that the demographics of organizations or users of different languages may vary greatly.